Washington's Birthday, also known as Presidents' Day, is a federal holiday held on the third Monday of February. The day honors presidents of the United States, including George Washington, the USA's first president. George Washington was the first president of the United States of America.
Complement component 5 is a protein that in humans is encoded by the C5 gene.Complement component 5 is involved in the complement system. It is cleaved into C5a and C5b: 1  C5a plays an important role in chemotaxis.2  C5b forms the first part of the complement membrane attack complex.omplement component 5 is the fifth component of complement, which plays an important role in inflammatory and cell killing processes.
A major function of vitamin C is its role as a cofactor in the formation and repair of collagen -- the connective tissue that holds the body's cells and tissues together. Collagen is a primary component of blood vessels, skin, tendons, and ligaments.Vitamin C also promotes the normal development of bones and teeth. major function of vitamin C is its role as a cofactor in the formation and repair of collagen -- the connective tissue that holds the body's cells and tissues together. Collagen is a primary component of blood vessels, skin, tendons, and ligaments. Vitamin C also promotes the normal development of bones and teeth.